NextJSON

What it does

NextJSON is a fast, privacy-first Chrome extension for working with JSON. Paste raw JSON into the popup to instantly parse and format it, or let it auto-format any JSON page in your browser. Explore data in Tree, Raw, Graph, Table, or UI Preview views, run JQ/JSONPath queries, search with regex, and edit inline with undo/redo. Fetch from URLs (custom methods + headers), diff payloads, and export to JSON, CSV, Excel, YAML, or TypeScript. Light & dark themes.

NextJSON is a full JSON IDE that runs in your browser: tree, graph, table, diff and a built-in JQ engine — all local, and nothing ever leaves your device. Free, MIT-licensed, on the Chrome Web Store.

Tree, graph, table, diff and a built-in JQ engine — all local, and nothing ever leaves your device. [ { "id" : 1 , "username" : "johndoe" , "email" : " [email protected] " , "isActive" : true , "createdAt" : "2026-01-15T08:30:00Z" }, { "id" : 2 , "username" : "janewright" , "isActive" : false } ] [ ] users · 3 0 · 1 · 2 { } users[0] username : "johndoe" isActive : true { } users[1] username : "janewright" isActive : false { } users[2] username : "alexsmith" isActive : true − 100% + users · 3 rows · 4 columns id username ↑ email isActive 1 johndoe [email protected] true 2 janewright [email protected] false 3 alexsmith [email protected] true ~…from sourcelogs.com

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